153 lines
4.6 KiB
Python
Executable file
153 lines
4.6 KiB
Python
Executable file
#!/usr/bin/env nix-shell
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#!nix-shell -p nix -p python3 -p git -i python
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# USAGE - just run the script: ./update.py
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# When editing this file, make also sure it passes the mypy typecheck
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# and is formatted with black.
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import fileinput
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import json
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import xml.etree.ElementTree as ET
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from urllib.parse import urlparse
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import re
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import subprocess
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import tempfile
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import urllib.request
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from datetime import datetime
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from pathlib import Path
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from typing import Dict
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SCRIPT_DIR = Path(__file__).parent.resolve()
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def sh(*args: str) -> str:
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out = subprocess.check_output(list(args))
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return out.strip().decode("utf-8")
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def prefetch_github(owner: str, repo: str, ref: str) -> str:
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return sh(
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"nix-prefetch-url",
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"--unpack",
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f"https://github.com/{owner}/{repo}/archive/{ref}.tar.gz",
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)
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def get_radare2_rev() -> str:
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feed_url = "http://github.com/radareorg/radare2/releases.atom"
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with urllib.request.urlopen(feed_url) as resp:
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tree = ET.fromstring(resp.read())
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releases = tree.findall(".//{http://www.w3.org/2005/Atom}entry")
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for release in releases:
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link = release.find("{http://www.w3.org/2005/Atom}link")
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assert link is not None
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url = urlparse(link.attrib["href"])
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tag = url.path.split("/")[-1]
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if re.match(r"[0-9.]+", tag):
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return tag
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else:
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print(f"ignore {tag}")
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raise RuntimeError(f"No release found at {feed_url}")
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def get_cutter_version() -> str:
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version_expr = """
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(with import <nixpkgs> {}; lib.getVersion (qt5.callPackage <radare2/cutter.nix> {}))
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"""
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return sh("nix", "eval", "--raw", version_expr.strip(), "-I", "radare2={0}".format(SCRIPT_DIR))
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def get_r2_cutter_rev() -> str:
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version = get_cutter_version()
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url = f"https://api.github.com/repos/radareorg/cutter/contents?ref=v{version}"
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with urllib.request.urlopen(url) as response:
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data = json.load(response) # type: ignore
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for entry in data:
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if entry["name"] == "radare2":
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return entry["sha"]
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raise Exception("no radare2 submodule found in github.com/radareorg/cutter")
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def git(dirname: str, *args: str) -> str:
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return sh("git", "-C", dirname, *args)
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def get_repo_info(dirname: str, rev: str) -> Dict[str, str]:
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sha256 = prefetch_github("radare", "radare2", rev)
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cs_ver = None
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with open(Path(dirname).joinpath("shlr", "Makefile")) as makefile:
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for l in makefile:
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match = re.match("CS_VER=(\S+)", l)
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if match:
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cs_ver = match.group(1)
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assert cs_ver is not None
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cs_sha256 = prefetch_github("aquynh", "capstone", cs_ver)
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return dict(
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rev=rev,
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sha256=sha256,
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version_commit=git(dirname, "rev-list", "--all", "--count"),
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gittap=git(dirname, "describe", "--tags", "--match", "[0-9]*"),
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gittip=git(dirname, "rev-parse", "HEAD"),
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cs_ver=cs_ver,
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cs_sha256=cs_sha256,
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)
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def write_package_expr(version: str, info: Dict[str, str]) -> str:
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return f"""generic {{
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version_commit = "{info["version_commit"]}";
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gittap = "{info["gittap"]}";
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gittip = "{info["gittip"]}";
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rev = "{info["rev"]}";
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version = "{version}";
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sha256 = "{info["sha256"]}";
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cs_ver = "{info["cs_ver"]}";
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cs_sha256 = "{info["cs_sha256"]}";
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}}"""
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def main() -> None:
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radare2_rev = get_radare2_rev()
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r2_cutter_rev = get_r2_cutter_rev()
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with tempfile.TemporaryDirectory() as dirname:
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git(
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dirname,
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"clone",
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"--branch",
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radare2_rev,
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"https://github.com/radare/radare2",
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".",
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)
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nix_file = str(SCRIPT_DIR.joinpath("default.nix"))
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radare2_info = get_repo_info(dirname, radare2_rev)
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git(dirname, "checkout", r2_cutter_rev)
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timestamp = git(dirname, "log", "-n1", "--format=%at")
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r2_cutter_version = datetime.fromtimestamp(int(timestamp)).strftime("%Y-%m-%d")
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r2_cutter_info = get_repo_info(dirname, r2_cutter_rev)
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in_block = False
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with fileinput.FileInput(nix_file, inplace=True) as f:
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for l in f:
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if "#<generated>" in l:
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in_block = True
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print(
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f""" #<generated>
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# DO NOT EDIT! Automatically generated by ./update.py
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radare2 = {write_package_expr(radare2_rev, radare2_info)};
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r2-for-cutter = {write_package_expr(r2_cutter_version, r2_cutter_info)};
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#</generated>"""
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)
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elif "#</generated>" in l:
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in_block = False
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elif not in_block:
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print(l, end="")
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if __name__ == "__main__":
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main()
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